Jacobus H. Koolen

36 papers C 1Journal 34
YearRankTypeTitle / Venue / Authors
2019 J jnl
A new characterization of the dual polar graphs.
J. Comb. Theory B
Zhi Qiao, Jacobus H. Koolen
2018 J jnl
A valency bound for distance-regular graphs.
J. Comb. Theory A
Zhi Qiao, Jacobus H. Koolen
2017 J jnl
Max-cut and extendability of matchings in distance-regular graphs.
Eur. J. Comb.
Sebastian M. Cioaba, Jacobus H. Koolen, Weiqiang Li
2016 J jnl
Arithmetic completely regular codes.
Discret. Math. Theor. Comput. Sci.
Jacobus H. Koolen, Woo-Sun Lee, William J. Martin, Hajime Tanaka
2016 J jnl
Characterizing block graphs in terms of their vertex-induced partitions.
Australas. J Comb.
Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton, Andreas Spillner
2016 J jnl
Equiangular lines in Euclidean spaces.
J. Comb. Theory A
Gary R. W. Greaves, Jacobus H. Koolen, Akihiro Munemasa, Ferenc Szöllösi
2014 J jnl
On geometric distance-regular graphs with diameter three.
Eur. J. Comb.
Sejeong Bang, Jacobus H. Koolen
2012 — book
Basic Phylogenetic Combinatorics.
Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton, Andreas Spillner
2011 J jnl
Blocks and Cut Vertices of the Buneman Graph.
SIAM J. Discret. Math.
Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton
2010 J jnl
A Conjecture of Biggs Concerning the Resistance of a Distance-Regular Graph.
Electron. J. Comb.
Greg Markowsky, Jacobus H. Koolen
2010 J jnl
An Algorithm for Computing Cutpoints in Finite Metric Spaces.
J. Classif.
Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton, Andreas Spillner
2010 J jnl
On Sum of Powers of the Laplacian and Signless Laplacian Eigenvalues of Graphs.
Electron. J. Comb.
Saieed Akbari, Ebrahim Ghorbani, Jacobus H. Koolen, Mohammad Reza Oboudi
2010 J jnl
On distance-regular graphs with smallest eigenvalue at least -m.
J. Comb. Theory B
Jacobus H. Koolen, Sejeong Bang
2009 J jnl
A graph-theoretical invariant of topological spaces.
Appl. Math. Lett.
Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton
2009 J jnl
An algorithm for computing cutpoints in finite metric spaces
CoRR
Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton, Andreas Spillner
2009 J jnl
Arithmetic completely regular codes
CoRR
Jacobus H. Koolen, Woo-Sun Lee, William J. Martin
2009 J jnl
Quartets in maximal weakly compatible split systems.
Appl. Math. Lett.
Stefan Grünewald, Jacobus H. Koolen, Woo-Sun Lee
2008 J jnl
Block realizations of finite metrics and the tight-span construction I: The embedding theorem.
Appl. Math. Lett.
Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton
2008 J jnl
Characterizing Cell-Decomposable Metrics.
Electron. J. Comb.
Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton, Andreas Spillner
2008 J jnl
Compatible decompositions and block realizations of finite metrics.
Eur. J. Comb.
Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton
2008 J jnl
Counting vertices and cubes in median graphs of circular split systems.
Eur. J. Comb.
Y. B. Choe, Katharina T. Huber, Jacobus H. Koolen, Y. S. Kwon, Vincent Moulton
2008 J jnl
Cut points in metric spaces.
Appl. Math. Lett.
Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton
2007 C conf
An Algorithm for Computing Virtual Cut Points in Finite Metric Spaces.
COCOA
Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton
2007 J jnl
Delsarte clique graphs.
Eur. J. Comb.
Sejeong Bang, Akira Hiraki, Jacobus H. Koolen
2007 J jnl
Two theorems concerning the Bannai-Ito conjecture.
Eur. J. Comb.
Sejeong Bang, Jacobus H. Koolen, Vincent Moulton
2006 J jnl
Characterizing distance-regularity of graphs by the spectrum.
J. Comb. Theory A
Edwin R. van Dam, Willem H. Haemers, Jacobus H. Koolen, Edward Spence
2006 J jnl
Improving diameter bounds for distance-regular graphs.
Eur. J. Comb.
Sejeong Bang, Akira Hiraki, Jacobus H. Koolen
2006 J jnl
On the structure of the tight-span of a totally split-decomposable metric.
Eur. J. Comb.
Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton
2005 J jnl
The tight span of an antipodal metric space - Part I: : Combinatorial properties.
Discret. Math.
Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton
2004 J jnl
The Tight Span of an Antipodal Metric Space: Part II--Geometrical Properties.
Discret. Comput. Geom.
Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton
2002 J jnl
Krein parameters and antipodal tight graphs with diameter 3 and 4.
Discret. Math.
Aleksandar Jurisic, Jacobus H. Koolen
2001 J jnl
Six Points Suffice: How to Check for Metric Consistency.
Eur. J. Comb.
Andreas W. M. Dress, Katharina T. Huber, Jacobus H. Koolen, Vincent Moulton
1995 J jnl
A Characterization of the Doob Graphs.
J. Comb. Theory B
Jacobus H. Koolen
1993 J jnl
A new infinite series of regular uniformly geodetic code graphs.
Discret. Math.
Andries E. Brouwer, Jacobus H. Koolen
1993 J jnl
On uniformly geodetic graphs.
Graphs Comb.
Jacobus H. Koolen
1990 J jnl
Perfect modes with distinct protective radii.
Discret. Math.
J. M. van den Akker, Jacobus H. Koolen, Rob J. M. Vaessens